Zobrazeno 1 - 10
of 220
pro vyhledávání: '"Dias, Óscar J. C."'
Using a mix of analytical and numerical methods, we construct new rotating, charged "hairy" black hole solutions of $D=5$, ${\cal N}=8$ gauged supergravity that are dual, via the AdS/CFT correspondence, to thermal states in $D=4$, ${\cal N}=4$ SYM at
Externí odkaz:
http://arxiv.org/abs/2411.18712
Autor:
Dias, Oscar J. C., Santos, Jorge E.
We investigate the low-energy regime of BFSS quantum mechanics using its holographic dual. We identify three distinct thermodynamic phases (black holes) and analyze their thermodynamic properties extensively, including phase transitions amongst the s
Externí odkaz:
http://arxiv.org/abs/2407.15921
We construct stationary, rotating black binaries in general relativity with a positive cosmological constant. We consider identical black holes with either aligned or anti-aligned spins. Both cases have less entropy than the corresponding single Kerr
Externí odkaz:
http://arxiv.org/abs/2406.10333
Christodoulou's formulation of Strong Cosmic Censorship (SCC) holds true for Kerr-de Sitter black holes. On the other hand, Reissner-Nordstr\"om-de Sitter black holes violate SCC. We do a detailed scan of the parameter space of Kerr-Newman-de Sitter
Externí odkaz:
http://arxiv.org/abs/2404.03724
Scalar QNM spectra of Kerr and Reissner-Nordstr\'om revealed by eigenvalue repulsions in Kerr-Newman
Recent studies of the gravito-electromagnetic frequency spectra of Kerr-Newman (KN) black holes have revealed two families of quasinormal modes (QNMs), namely photon sphere modes and near-horizon modes. However, they can only be unambiguously disting
Externí odkaz:
http://arxiv.org/abs/2305.11216
Publikováno v:
Phys. Rev. D 108, L041502 (2023)
Due to coherent superradiant amplification, massive bosonic fields can trigger an instability in spinning black holes, tapping their energy and angular momentum and forming macroscopic Bose-Einstein condensates around them. This phenomenon produces g
Externí odkaz:
http://arxiv.org/abs/2304.01265
We construct the first four-dimensional multi-black hole solution of general relativity with a positive cosmological constant. The solution consists of two static black holes whose gravitational attraction is balanced by the cosmic expansion. These s
Externí odkaz:
http://arxiv.org/abs/2303.07361
We construct a cohomogeneity-1 helical black string in six-dimensional Einstein gravity. The helical solution branches from the onset of the gravitational superradiant instability of the equal-spinning Myers-Perry black string. The isometry group of
Externí odkaz:
http://arxiv.org/abs/2302.09085
We construct novel black strings that are neither time-translation invariant, nor axisymmetric, nor translationally invariant in the string direction, but nevertheless have a helical Killing vector field. These solutions branch from the superradiant
Externí odkaz:
http://arxiv.org/abs/2212.01400
We investigate the effect of superradiant scattering of gravitational perturbations on the stability of rotating black strings, focusing on the six dimensional equal-spinning Myers-Perry black string. We find that rapidly rotating black strings are u
Externí odkaz:
http://arxiv.org/abs/2211.02672